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IVDF Series Butterfly valve

Double flanged Centric Disc Rubber lined Flanged end Butterfly valve

The most sought after design by desalination plants and utility installations, IVDF represents the state of the art rubber lined Flanged double valve, meeting all the user industry requirements.

The double flanged body pattern ensures precise installation in pipeline, and can be used as an end to the line valve if required. The unique feature of this valve, is its adaptability for lined pipes, due to negligible disc protrusion beyond the body laying length. The universal square top shaft on valves upto DN200, enables easy change over from hand lever operation to actuated operation when required.

Conformity to Codes & Standards

General design & manufacturing EN 593 / API 609 / IS 13095
Valve face to face dimension Double flanged Short Pattern to EN593  / API 609 IS 13095 / ISO 5752 series-13
Top flange drilling ISO 5211
Valve Inspection & Testing EN 12266 Part 1 / API 598
Flange Standard DIN EN 1092-PN6 / PN10 / PN16 or BS 4504 / Class 150 AW AC 207 Class – B & D

 

Technical Specifications:

 

1 Valve type Centric Disc Rubber lined Flanged end Butterfly valve
2 Body type Double Flanged Short
3 Seat (liner) type Integrally Bonded with body ID
4 End connection Flanged Ends (Double Flanged)
5 Size Range *DN 50 to DN 600 – ASME Class 150 (max)
6 Pressure rating * DN 650 to DN 1200-PN10 (max)
7 Operating temperature range -25C to 2000 C (depending on MOC)
8 Seat leakage Tight shut off
9 Operation Hand Lever for sizes upto DN200 or Worm Gear,  Pneumatic or Electric Actuators
10 Standard Material of Construction (MOC)

·         Valve Body

·         Disc

·         Bonded Seat

·         Drive end & non drive end shaft

·         Bearing

 

CI / SGI / WCB

SGI / WCB / CF8 / CF8M

Nitrile / EDPM / Neoprene / Hypalon

SS 410 / SS 17.4 PH / SS 316

Steel+PTFE or SS316+PTFE

* PN16 and below ratings are as per EN593

 

 

 

 

 

 

 

PARTS LIST & MATERIAL OF CONSTRUCTION

 

Part. # PART DESCRIPTION QTY. MATERIAL PART No. PART DESCRIPTION
1 BODY (BONDED) 1 CI / SGI / WCB
1A SEAT (BONDED) 1 NITRILE / EPDM / NEOPRENE / HYAPLON
2 GLACIER BEARING 3 STEEL + PTFE / SS + PTFE
3 0-RING 1 NITRILE / EDPM  * UPTO 500 NB ONLY
4 BUSH 1 POLYACETAL  * UPTO 500 NB ONLY
4A O-RING HOLDER 1 AISI-316 600 NB & ABOVE
5 O-RING (INNER) 1 NITRILE / EDPM  * 600 NB & ABOVE
6 O-RING (OUTER) 2 NITRILE / EDPM  * 600 NB & ABOVE
7 TOP RETAINER PLATE 1 AISI-316 250 NB & ABOVE
8 SOC. HD. CAP SCREW 4 AISI-316 250 NB & ABOVE
9 DISC 1 SGI / WCB / CF8 / CF8M 250 NB & ABOVE
10 TOP SHAFT 1 AISI-410 / 17.4 PH
11 BOTTOM SHAFT 1 AISI-410 / 17.4 PH
12 TAPER PIN 1/2 AISI-316 * 250 NB & ABOVE
13 THRUST BEARING 1 AL. BRONZE
14 O-RING BOTTOM 1 NITRILE / EPDM *
15 BOTTOM COVER 1 CS / IS2062 Gr. B / AISI-304
15A BOTTOM PLUG 1 CA15 / AISI-316 * UPTO 200 NB ONLY
16 SOC. HD. CAP SCREW 4 AISI-304
17 SOC. HD. GRUB SCREW 4 AISI-304
18 PARALLEL KEY 1 EN8 / AISI-410 / MONEL
NOTE – MARKED * ARE STD. SPARES

 

Dimensions:

 

 

 

 

 

Key Features:

 

  • Fully rubber lined body, with lining extending upto the flange contact face to make gasket free sealing.
  • Ideal valve for installation with lined pipes, since the disc chord interference with pipe ID is negligible.
  • Controlled compression of the gasket face offers optimum sealing and prevents gasket face crushing.
  • Unique triple sealing system, for shaft sealing to ensure zero secondary leakage.
  • Self lubricated PTFE lined bearings, for both drive end and non-drive end shafts, ensures minimum bearing friction.
  • Bi-directional tight shut off sealing from vacuum to rated pressure.
  • Excellent adaptability for actuated operation through standardized ISO top flange.
  • Universal top square shaft enabling direct actuator fitment, after removal of Hand lever, for sizes upto DN200.
  • Choice of seat and disc materials to suit media and operating conditions.
  • Enables installation close to other pipe fittings, without disc interference.
  • Preferred design for desalination plants, municipal water supply and Effluent plants.
  • Adjustable bottom thrust pad / bearing for DN250 and higher to take care of axial thrust loading.
  • DN600/DN650 size provided with “O Ring holder” type drive end shaft sealing arrangement for extra reliability.

 

Specifications & Dimensions are subject to change without prior notice